Improvement in harness-operating- mechanism for looms



.X4/WMZ 'ja/maya N. PETERS. FHOT-LITHOGRAPHER, WASHINGTON. D C.

'dilated' git-etes tm eine Letters Patent No. 106,306, elated August 16, 1870.

IMPROVEMENT IN HARNESS-OPERATING- MECHANISM FOR LOQMS;

The Schedule referred to in these Lettere Patent and making part cf the same I, JOHN ASHWORTH, of North Andover, in thev county of Essex and State of Massachusetts, have invented certain Improvements in Looms, of' which 'the following is a specih'cat-ion.

My invention relates to the, construction of the mechanism for operating the heddles in a fancy loom, by which the same is much simplified; and consists in combining with each of the levers or jacks which work the heddles a projecting radial arm in which is l formed a duplex cam or groove, the two parts ot which are inclined to the radins of the lever in opposite di# rections, a vibrating bar or its equivalent, which moves in the direction oi' the radins of thesaid arm,l and work`s in said cam-groove to vibrate the jack, and a shifting guide-piece that forms a part of said camgroove and directs the said barfinto one inclined part or the other of said cam-groove, according to the position in which it'is placed by the pattern-chain, which thus determines in which direction the jack shall be vi. brated, and, consequently, whether the leaf of heddles connected therewith shall be raised or depressed.

l Description.

In the accompanying drawingv Figure l is an end elevation ofso much of the loom as will show the nature andV mode of application of my improvement. l

- Figure 2 is a Side elevation of the saine.

Figures 3 and 4' are detached views, showing the relations Iof the jack with its duplex cam-groove, the vibrating bar, the guide-piece, which directs the bar into the inclnes of the groove, and the pattern-chain.

A is the frame of the loom;

B, the lay-shaft; and v f G C, Snc., the heddle-lcvers or jacks, arranged vertically at the side of Jthe loom, and working the heddles in a well-known manner;

From the center of each lever C an arm, C', extends radially outward, ofl the form shown, in which the duplex-forked groove orslot I) is made.

E is a vibrating bar, which extends transversely through all the grooves'of the series of jacks, and is attached to the lower ends of the vibrating arms F upon the rocking-shaft G, which receives an oscillating motion of the requisite extent bymeans of the arm H upon the same, andthe connecting rod I,1'from the crank J upon the lay-shaft B, in an obvious'4 man' nel'.

K is a guide-piece, which is placed at the angle formed by the two inclined parts of' the groove D, and

is made to vibrate upon a fulcrum, at a. The extentv of its 'vibration is so limited that when at the extreme of its motion in one direction the opposite side of the same will form a part of the inclined groove, and will also so far close the other incline as to direct the bar E into the first.

lhe outer end of the gnidefpiece K extends beyond the jack, and is turned up, as shown, to form a face upon which the pattern-chain Laet-s.

'The pattern-chain is of a well-known description, being 'composed of large and small bolls arranged upon' pins which are linked --together to form an endless chain, and rests upon sprocket-wheels M, which are turned by a ratchet, N, and pawl O, upon the rocking lever P, which isV worked from one of the arms F, as is shown in the drawing, and is held hy an index, It, and detent, S, in a manner well known.

As the pattern-chain revolves the large vbolls come against the outer faces of `the guide-pieces K and throw them inward, depressing the point of the guidepiece so that the bar E, as it moves outward, is guided into the upper incline and depresses the arm C' ofthe jack, as is shown in tig. 3; and, when the small boll of the pattern-chain comes opposite the outer face ot' the guide-piece K, the said piece falls outward by gravity. or is forced ontby a spring, so that the parts are put in the position 'shownin iig. 4, which directs the bar E into thelower incline and gives a motionto the jack in an opposite direction to that iirst mentioned.

Upon this bar is arranged a series of rollers, one to work inthe groove of each jack, to avoid friction and prevent the wear of the groove.

lVhat'I. claim as my invention is- The combination, with the jack, of the projecting radial arm C', having the duplex inclined cams or groove, the vibrating bar to move the same, and the guide-piece, controlled by a pattern, substantially as described.

Executed May 11th, 1870.

J OH Nv ASHWORTH.

Witnesses:

G. E. WHITNEY, WM. O. HIBBURD. 

